CN219242728U

CN219242728U - Air compressor bleed valve structure

Info

Publication number: CN219242728U
Application number: CN202320117764.3U
Authority: CN
Inventors: 周华荣; 顾茸蕾; 刘伟
Original assignee: Hedwell Taicang Energy Technology Co ltd
Current assignee: Hedwell Taicang Energy Technology Co ltd
Priority date: 2023-02-06
Filing date: 2023-02-06
Publication date: 2023-06-23
Anticipated expiration: 2033-02-06

Abstract

The utility model discloses a gas compressor air release valve structure which comprises a valve body, a valve core, a positioning ring, a spring, a plug and a pressure shell, wherein the valve body is arranged on the pressure shell; and a positioning ring is arranged between the inner wall of the cavity of the valve body and the valve core. The utility model solves the problem of low-speed surge of the compressor with the expander, so that the Map of the compressor not only meets the expansion of the surge boundary of the low-speed region, but also ensures that the valve of the high-speed region at the high-density point is closed, and ensures the pneumatic efficiency of the high-speed region.

Description

Air compressor bleed valve structure

Technical Field

The utility model relates to the technical field of compressor accessories, in particular to a gas discharge valve structure of a compressor.

Background

The most advanced air compressor technology in the market at present belongs to an expander technology with energy recovery, and the energy is recovered by utilizing the expander to achieve the purpose of reducing energy consumption, so that the extra power consumed by a system is reduced, the rated power of a battery pack module is reduced under the condition that the net output power of the system is kept unchanged, the integration, the miniaturization and the light weight of the system are facilitated, the existing two-stage supercharging scheme in the market already has a wide enough pneumatic map to meet different requirements of clients, but after the expander with energy recovery, the single-stage supercharging air compressor map is obviously narrower than the two-stage supercharging air compressor, which is disadvantageous for the requirements of clients, and when the operation line required by the clients requires the high voltage ratio of low-voltage power, the high flow trend of high-voltage power is met, the single-stage supercharging map is a great challenge for the single-stage supercharging, and the single-stage supercharging map can not meet the requirements of clients in many cases.

The existing compressor has the defects that a customer is required to carry out the air discharge operation of an air channel at other places, so that complaints of the customer end and the complexity of a system are increased, and the integration is low; if the bleed is not performed at low speed, the risk of surge of the low speed compressor may be caused, and the service life of the air compressor is drastically reduced. Although the integrated design scheme of adding the RCV valve can effectively and accurately control the deflation action, the integrated design scheme needs to be controlled by adding an electric signal, which increases the complexity and the calibration difficulty of the system.

Disclosure of Invention

The utility model aims to: in view of the foregoing problems and disadvantages of the prior art, an object of the present utility model is to provide a bleed valve structure for a compressor. The problem of the low-speed surge of the air compressor with the expander is solved, so that the Map of the air compressor can meet the expansion of the surge boundary of a low-speed zone, the valve closing in a high-speed zone with high electric density is ensured, and the pneumatic efficiency of the high-speed zone is ensured.

The technical scheme is as follows: in order to achieve the purpose, the air compressor air release valve structure comprises a valve body, a valve core, a positioning ring, a spring, a plug and a pressure shell, wherein the valve body is arranged on the pressure shell, and an air compressor air inlet connector and an air compressor air outlet are arranged on the pressure shell; the end face of the air outlet button of the air compressor is of a flange structure, the plug is arranged at the top end of the valve body, a cavity is arranged on the inner side of the valve body, a valve core is arranged in the cavity, and a spring is arranged at the bottom end of the valve core at the bottom of the cavity of the valve body; and a positioning ring is arranged between the inner wall of the cavity of the valve body and the valve core.

Further, a first sealing ring is arranged between the inner wall of the cavity of the valve body and the positioning ring.

Further, a second sealing ring is arranged at the joint of the valve body and the pressing shell. The sealing performance of the connection of the valve body and the pressing shell is guaranteed through the design of the first sealing ring, and gas leakage is prevented.

Further, the valve body is connected with the pressing shell through a fastening bolt. The fastening bolt can ensure the connection and the fastening between the valve body and the pressing shell, the falling phenomenon can not occur, and the connection stability is improved to a greater extent.

Further, the cavity and the plug of the valve body form a feedback channel, and the feedback channel is communicated with the air outlet of the air compressor. The compressor air inlet connector is connected with the compressor air inlet.

Further, a U-shaped groove is formed in the bottom of the valve core, and the top end of the spring is embedded into the U-shaped groove. The U-shaped groove is specially designed for the spring, and the top end of the spring is embedded into the U-shaped groove, so that a certain limiting effect can be achieved on the spring.

Further, a concave notch is arranged at the upper end of the U-shaped groove on the valve core.

The technical scheme can be seen that the beneficial effects of the utility model are as follows:

the bleed valve structure of the air compressor can realize the actions of low-speed bleeding and high-speed closing, and ensure the low-speed non-surge of the single-pole press and the high-speed high-efficiency; the electric signal is not required to be additionally used for controlling the valve, so that the complexity of the system is not increased; the cost is lower compared to an integrated RCV solenoid valve.

Drawings

FIG. 1 is a schematic perspective view of the present utility model;

FIG. 2 is a schematic view of the internal structure of a compressor bleed valve in an open state when a low pressure to low flow is desired in a fuel cell system;

FIG. 3 is a schematic view of the internal structure of the fuel cell system at another angle with the compressor bleed valve in an open state when low pressure to low flow is desired;

FIG. 4 is a schematic diagram of a compressor bleed valve in a closed state when a high pressure to high flow is desired in a fuel cell system;

fig. 5 is a schematic view showing an internal structure of the fuel cell system at another angle in which the compressor bleed valve is in a closed state when a high pressure ratio and a high flow rate are required.

Detailed Description

The utility model is further elucidated below in connection with the drawings and the specific embodiments.

The air compressor air release valve structure comprises a valve body 1, a valve core 2, a positioning ring 3, a spring 4, a plug 6 and a pressure shell 8, wherein the valve body 1 is arranged on the pressure shell 8, and an air compressor air inlet connecting piece 81 and an air compressor air outlet 82 are arranged on the pressure shell 8; the end face of the air outlet 82 of the air compressor is of a flange structure, the plug 6 is arranged at the top end of the valve body 1, a cavity 100 is arranged on the inner side of the valve body 1, a valve core 2 is arranged in the cavity 100, and a spring 4 is arranged at the bottom end of the valve core 2, which is positioned at the bottom of the cavity 100 of the valve body 1; a positioning ring 3 is arranged between the inner wall of the cavity 100 of the valve body 1 and the valve core 2.

In this embodiment, a first sealing ring 5 is disposed between the valve body 1 and the pressing shell 8.

The valve body 1 and the press shell 8 are connected through a fastening bolt 9 in the embodiment.

In this embodiment, a second sealing ring 7 is disposed between the valve body 1 and the pressing shell 8 and outside the first sealing ring 5.

In this embodiment, the cavity 100 of the valve body 1 and the plug 6 form a feedback channel, and the feedback channel is communicated with the compressor air inlet connector 81 and the compressor air outlet 82.

In this embodiment, a U-shaped groove 21 is provided at the bottom of the valve core 2, and the top end of the spring 4 is embedded in the U-shaped groove 21.

In this embodiment, a concave notch 22 is provided on the valve core 2 at the upper end of the U-shaped groove 21.

As shown in fig. 2 and 3, when the fuel cell system needs low pressure ratio and low flow rate, the end of the valve core 2 is subjected to the pressure of the air outlet 82 of the air compressor fed back through the feedback channel formed by the valve body 1 and the plug 6, at this time, the pressure is low, the fed back pressure is insufficient to enable the valve core 2 to slide along the inner wall of the valve body 1 and the inner wall of the positioning ring 3 against the thrust of the spring 4, the valve is in an open state, and air flows back from the air outlet 82 of the air compressor to the air inlet of the air compressor;

as shown in fig. 4 and 5, when the fuel cell system needs high pressure ratio and high flow rate, the end of the valve core 2 is subjected to the pressure of the air compressor outlet 82 fed back through the feedback channel formed by the valve body 1 and the plug 6, at this time, the pressure is high, the fed back pressure overcomes the thrust of the spring 4 to enable the valve core 2 to slide along the inner wall of the valve body 1 and the inner wall of the positioning ring 3, the valve is in a closed state, and the air flow cannot flow back from the air compressor outlet 82 to the air compressor inlet;

the examples are intended to illustrate the utility model and not to limit its scope, and after reading the utility model, various equivalents of the utility model by those skilled in the art are within the scope of the utility model as defined by the claims appended hereto.

Claims

1. The utility model provides a compressor bleed valve structure which characterized in that: the valve comprises a valve body (1), a valve core (2), a positioning ring (3), a spring (4), a plug (6) and a pressure shell (8), wherein the valve body (1) is arranged on the pressure shell (8), and a gas inlet connecting piece (81) and a gas outlet (82) of a gas compressor are arranged on the pressure shell (8); the plug (6) is arranged at the top end of the valve body (1), a cavity (100) is arranged at the inner side of the valve body (1), a valve core (2) is arranged in the cavity (100), and a spring (4) is arranged at the bottom end of the valve core (2) at the bottom of the cavity (100) of the valve body (1); a positioning ring (3) is arranged between the inner wall of the cavity (100) of the valve body (1) and the valve core (2).

2. The compressor bleed valve structure of claim 1, wherein: a first sealing ring (5) is arranged between the valve body (1) and the pressing shell (8).

3. A compressor bleed valve structure as defined in claim 2, wherein: and a second sealing ring (7) is arranged between the valve body (1) and the pressing shell (8) and positioned at the outer side of the first sealing ring (5).

4. The compressor bleed valve structure of claim 1, wherein: the valve body (1) is connected with the pressing shell (8) through a fastening bolt (9).

5. The compressor bleed valve structure of claim 4, wherein: the cavity (100) and the plug (6) of the valve body (1) form a feedback channel, and the feedback channel is communicated with the air inlet connector (81) and the air outlet (82) of the air compressor.

6. The compressor bleed valve structure of claim 1, wherein: the bottom of case (2) is equipped with U-shaped groove (21), and the top embedding of spring (4) sets up in U-shaped groove (21).

7. The compressor bleed valve structure of claim 6, wherein: the valve core (2) is provided with a concave notch (22) at the upper end of the U-shaped groove (21).